Barrier



FIG. 1 is a top perspective view of a barrier showing the new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a left elevation view thereof; and,

FIG. 8 is a right elevation view thereof.

The broken lines shown in FIGS. 2 and 4 are included for the purpose of illustrating unclaimed portions of the barrier and from no part of the claimed design. 

CLAIM The ornamental design for a barrier, as shown and described. 